KR20060054366A - Weft knitting machine having movable sinker - Google Patents

Abstract

A weft knitting machine having a movable sinker capable of securing a large space at a needle bed near a knitting fabric knitting area and making a pause in the state of stopping action on the knitting fabric knitting area. A sinker operating cam mechanism (10) installed in a carriage acts on the butt (12c) of a sinker jack (12) to move the sinker jack (12) backward from a mouth part (2) so that the acting part (8c) of the movable sinker (8) can retract from the mouth part (2). The sinker jack (12) is locked to a moved back position by a locking mechanism (16). Since a wire (17) passed through a needle plate (5) is utilized to lock the sinker jack (12) in the locking mechanism (16), the locking mechanism (16) can be reduced in size. To lock the sinker jack (12) to the wire (17), the sinker jack (12) comprises a projection (12f).

Description

Flat knitting machine with movable sinker {WEFT KNITTING MACHINE HAVING MOVABLE SINKER}

TECHNICAL FIELD This invention relates to the flat knitting machine provided with the movable sinker which can pressurize a knitted fabric at the appropriate timing during knitting.

Conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 5-83657, between the needles arranged on the needle bed of the flat knitting machine, the needle bed gap side of the needle bed is taken as a point. A sinker device is used that includes a movable sinker that is rotationally displaced and displaced by a cam mechanism installed in the carriage so that the tip advances into or evacuates from the needle bed gap. In this case, the carriage is provided with two pressurized cams. The tip of the movable sinker moves forward and backward with respect to the needle bed gap side in association with the movement of the carriage by the rotational displacement caused by the action of one pressurizing cam. Accordingly, it is possible to press the knitted fabric or to escape from the needle bed gap so that mechanical interference with other parts does not occur in the narrow needle bed gap. The movable sinker is also spring pressurized. When the reaction force from the knitting yarn is larger than the pressing force (elastic force) by the spring, the tip of the movable sinker may be retracted from the needle bed gap, thereby preventing excessive tension from acting on the knitting yarn. When the carriage drops off, the movable sinker remains in the needle bed gap by spring pressure.

In addition, when a knitted needle is used as the knitting needle when knitting the knitting fabric by advancing the knitting needle against the needle bed gap in the carriage, the amount of advance displacement can be reduced as compared with the case where a latch needle is used. Therefore, the cam for knitting to be installed in the carriage can be miniaturized. In the case of using a compound needle, for example, as disclosed in Japanese Patent Laid-Open No. 7-258946, the tip of the needle bed is interlocked with the needle to securely supply the knitting yarn to the hook of the tip of the needle. A knitting guide member for advancing into the gap and guiding the knitting to the hook is used together with the movable sinker. The movable sinker is rotated and displaced about a point supported near the needle bed gap side of the needle bed, similarly to the sinker device of JP-A-5-83657, and the tip can be moved forward and backward with respect to the needle bed gap side. Do.

In the movable sinker disclosed in Japanese Patent Application Laid-Open No. 5-83657 or Japanese Patent Application Laid-open No. Hei 7-258946, rotational displacement is performed by pivotally being supported near the needle bed gap side of the needle bed. By pressing the vicinity of the pivot support portion to the bottom face side of the needle bed with a cam mechanism provided on the carriage, a rotational displacement of the tip of the movable sinker with respect to the needle bed gap side is achieved. On the other hand, as disclosed in, for example, Japanese Unexamined Patent Application Publication No. 5-59642, the tip of the sinker jack linearly advancing and displacing the vicinity of the pivot support portion of the sinker that is rotationally displaced with respect to the needle bed gap. By combining, it is also possible to switch the sinker to the upper needle bed and the lower needle bed of the two-stage flat knitting machine.

In addition, in the flat knitting machine in which the front and rear needle beds face each other with the needle bed gap interposed, a racking operation for relatively shifting the front and rear needle beds enables knitting of patterns, molded knitted fabrics, etc. with racking. Diversification of organization is planned. However, in the case where the knitted fabric is knitted using a thick knitting yarn, when the racking operation is performed, the tip of the sinker may scratch and damage the knitted fabric bonded to the knitting needle on the opposite needle bed. It is preferable to retreat from. In a movable sinker device that is rotationally displaced, for example, as disclosed in Japanese Laid-Open Patent Publication No. 9-31806, a stop in which the tip of the movable sinker retreats from the needle bed gap and stops even after the carriage passes. Support means are installed. The stationary support means is a sinker stationary support plate that retracts linearly with respect to the needle bed gap in parallel with the knitting needle. By partially contacting the sinker stop support plate to the movable sinker, the tip of the movable sinker is supported in a retracted state from the needle bed gap.

The sinker device of Japanese Unexamined Patent Publications No. 5-83657 and Japanese Unexamined Patent Publication No. 9-31806 has a cam for pressing the movable cam when rotating the movable cam or determining the size of the stitch. It is necessary to provide a mechanism on the carriage side. Therefore, the carriage needs to cover the surface of the needle bed to the extent close to the needle bed gap, and cannot secure a wide space in the needle bed close to the needle bed gap, which is the knitted fabric knitting area.

In order to increase the amount of displacement of the tip of the movable sinker on the needle bed gap side, it is necessary to reduce the distance from the pivot support to the drive relative to the distance from the pivot support to the tip of the movable sinker. As in Japanese Patent Application Laid-Open No. 5-83657 and Japanese Patent Application Laid-Open No. 7-258946, in a configuration in which the movable sinker is rotationally displaced by pressurization from the carriage to the bottom side of the needle bed, a pressurizing cam or the like It is necessary to install the mechanism of the needle bed on the needle bed gap side of the needle bed. For this reason, the carriage is formed to cover the needle bed to the vicinity of the needle bed gap and is enlarged.

In the most popular type of flat knitting machine, a pair of front and rear needle beds face each other in the shape of a mountain with the needle bed gap interposed so as to descend as it moves away from the needle bed gap. Therefore, in the vicinity of the needle bed gap, which becomes the knitted fabric knitting area, the front and rear needle beds approach each other, and the space of the needle bed is narrowed. In addition, it is necessary to arrange a plurality of yarn feeders or the like for supplying knitting yarns in this space. In order to downsize the flat knitting machine and to enable the knitting of various knitted fabrics, it is necessary to secure a wide space in the vicinity of the needle bed gap.

Further, in the movable sinker as in Japanese Patent Application Laid-Open No. 5-83657, when the knitting force is pressed against the knitted fabric by spring pressure, and the resistance of the knitting yarn becomes larger than the pressing force (elastic force), the movable sinker retreats from the needle bed gap, The tension acting on the knitting yarn can be alleviated to prevent excessive tension from occurring. However, it is necessary to install a mechanism in the carriage that pressurizes the pivotal support portion of the movable sinker near the needle bed gap side of the needle bed, and the carriage covers the needle bed up to the needle bed gap side.

Moreover, the sinker of Unexamined-Japanese-Patent No. 5-59642 shares the sinker rotationally displaced between the upper needle bed and the lower needle bed in a 2nd bed, and knits in either needle bed. Whether to actuate the sinker on the fabric is driven remotely through the sinker jack at a position away from the needle bed gap. Therefore, it is not necessary to install a pressurizing mechanism or the like near the needle bed gap. However, the rotational displacement of the sinker is to switch the object to be operated between the upper needle bed and the lower needle bed, and the sinker always acts on the knitted fabric knitted in any needle bed. In addition, the force applied from the cam of the carriage to the sinker jack is transmitted to the knitting yarn through the rotationally displaced sinker, and there is a possibility that excessive tension may occur in the knitting yarn because the sinker has no room to retreat from the needle bed gap even when the knitting force is reacted. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a flat knitting machine having a movable sinker capable of securing a wide space in a needle bed close to a knitted fabric knitting area and stopping in a state in which the action on the knitted fabric knitting area is stopped.

Another object of the present invention is to provide a flat knitting machine having a movable sinker capable of securing a large space in a needle bed which is small and close to a knitted fabric knitting area.

Another object of the present invention is to secure a wide space in the needle bed close to the knitted fabric knitting area, and when the resistance from the knitting in the knitting fabric knitting area becomes large, it retreats from the knitting fabric knitting area and occurs in the knitting. It is to provide a flat knitting machine having a movable sinker capable of relieving tension.

According to the present invention, a plurality of needle plates are respectively provided in a direction toward the knitted fabric knitting region on a base disposed to face the knitted fabric knitting region, and the needle plate is provided at an end portion on the side of the knitted fabric knitting region. Is formed so that the thickness of the plate becomes thinner, and a needle groove is formed between the needle plates, the width of which is expanded on the knitted fabric knitting region side, and the needle groove is accommodated in each needle groove to accommodate the width of the needle groove. The enlarged end accommodates the movable sinker, respectively, to form a needle bed, and selectively moves the knitting needle against the knitted fabric knitting area while reciprocating the carriage along the knitting fabric knitting area on the needle bed. In the flat knitting machine provided with the movable sinker which knits the knit fabric by interaction of the,

The needle plate has a concave portion that pivotally supports the movable sinker at an end portion on the knitted fabric knitting region side,

The movable sinker includes a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part. It is provided with a working part which converts into a rotational displacement which makes a pivot support part a point, and acts as a sinker with respect to the said knitted fabric knitting area,

The needle bed is accommodated in each needle groove, is capable of advancing and displacing with respect to the knitted fabric knitting area, and engages with the passive portion of the movable sinker at the end, and extends in the direction away from the knitted fabric knitting area with respect to the end of the needle bed. A sinker jack having a butt projecting in a direction falling from the base, and having a groove portion extending in the advancing and displacing direction in the middle of the end and the base;

A penetrating member which penetrates each needle plate in the direction along the knitted fabric knitting region and is inserted into the groove portion of the sinker jack so as to restrict the sinker jack from sliding away from the needle groove;

A drive mechanism provided in the carriage, the drive mechanism being selectively operable to retract the sinker jack from the knitted fabric knitting region so as to act on the butt of the sinker jack to evacuate the actuating sinker from the knitted fabric knitting region;

And a coupling mechanism for coupling the sinker jack in the retracted position, which is installed at a position away from the knitted fabric knitting area within the advance displacement range of the sinker jack in each needle groove. It is a flat knitting machine provided with a sinker.

In the present invention, the coupling mechanism is characterized in that the projection formed on the base side of the sinker jack with respect to the member penetrating the needle plate in the direction along the knitted fabric knitting region.

In addition, in the present invention, the drive mechanism includes a cam that can be switched to actuation or non-operation according to the presence or absence of the solenoid of the solenoid as a driving source, and the operation of the cam coupled the butt by the coupling mechanism. It is characterized by retreating to a position to be.

The present invention provides a plurality of needle plates, each of which is arranged in a direction facing the knitted fabric knitted region, in a direction toward the knitted fabric knitted region, and the needle plate is made thinner at the end of the knitted fabric knitted region side. A needle groove is formed between the needle plate and the width of the needle groove is expanded on the knitted fabric knitting region side to accommodate the needle needle in each needle groove, and the movable sinker is formed at each end of the needle groove to extend the width of the needle groove to form a needle bed. In the flat knitting machine having a movable sinker for knitting the knitted fabric by interacting with the movable sinker by selectively retreating the knitting needle with respect to the knitted fabric knitting area while reciprocating the carriage along the knitted fabric knitting area on the needle bed. ,

The needle plate has a concave portion at an end portion on the knitted fabric knitting region side for pivotally supporting the movable sinker in rotational displacement,

The movable sinker is a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part as a pivotal displacement point as the pivot support part. A working part which is converted to act as a sinker on the knitted fabric knitting region,

The knitting needle is a compound needle which is arranged in parallel with the movable sinker in the width direction in each needle groove, and the needle body and the slider are each independently capable of advancing and displacing the knitting fabric knitting region,

In each needle groove,

Protrudes and displaces with respect to the knitted fabric knitting region and engages with the passive portion of the movable sinker at the end and protrudes in a direction away from the base of the needle bed on the base side extending in a direction away from the knitted fabric knitting region with respect to the end. A sinker jack provided with a butt and having a groove portion extending in the advancing and displacing direction between the end portion and the base portion;

It is arranged in a direction away from the base of the needle bed with respect to the knitting needle to restrict the knitting needle from falling on the floor at the bottom, and to prevent the sinker jack from shifting in the width direction of the needle groove at the side, and the groove extending in the advance direction at the side A spacer to be provided,

A yarn guide inserted into a groove of the spacer and formed on the side of the knitted fabric knitting region with respect to the base and the base sliding in the advancing direction, and having a knitting pressing portion capable of advancing into the knitted fabric knitting region to press the knitting yarn; ,

A through member for penetrating the spacer and the needle plate in each needle groove in a direction along the knitted fabric knitting region and being fixed to each other and inserted into the groove portion of the sinker jack to restrict the sinker jack from sliding away from the needle groove. It is a flat knitting machine provided with the movable sinker characterized by the above-mentioned.

In addition, in the present invention, a projection is formed on the base of the yarn guide inserted into the groove of the spacer and the sliding displacement,

The groove of the spacer is characterized in that a recess is formed to limit the displacement range of the projection of the yarn guide.

In the present invention, the knitting needle passage is formed in the spacer, which opens to the surface side of the needle bed and communicates with the knitted fabric knitting region side.

The present invention provides a plurality of needle plates, each of which is arranged in a direction facing the knitted fabric knitted region, in a direction toward the knitted fabric knitted region, and the needle plate is made thinner at the end of the knitted fabric knitted region side. A needle groove is formed between the needle plate and the width of the needle groove is enlarged on the knitted fabric knitting region side to accommodate the needle needle in each needle groove, and the movable sinker is formed at each end of the needle groove to expand the width of the needle groove to form a needle bed. In the flat knitting machine having a movable sinker for knitting the knitted fabric by interacting with the movable sinker by selectively retreating the knitting needle with respect to the knitted fabric knitting area while reciprocating the carriage along the knitted fabric knitting area on the needle bed. ,

The needle plate has a concave portion at an end portion on the knitted fabric knitting region side for pivotally supporting the movable sinker in rotational displacement,

The movable sinker is a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part as a pivotal displacement point as the pivot support part. A working part which is converted to act as a sinker on the knitted fabric knitting region,

The base of the needle bed, which is accommodated in each needle groove, is capable of advancing displacement with respect to the knitted fabric knitting region, engages with the passive portion of the movable sinker at the end, and extends in a direction away from the knitted fabric knitting region with respect to the end. A sinker jack having a butt projecting in a direction falling from the center and having a groove portion extending in the advancing and displacing direction in the middle of the end portion and the base;

A through member penetrating each needle plate in a direction along the knitted fabric knitting region and inserted into the groove portion of the sinker jack to restrict the sinker jack from sliding away from the needle groove;

A spring for urging the movable sinker to move its working portion into the knitted fabric knitting region,

The coupling of the passive part of a movable sinker and the end part of a sinker jack is provided with the movable sinker characterized by having a gap so that the said passive part and the said end may contact in one side by the pressurization by the said spring, and the other side will have a clearance gap. It is a flat knitting machine.

In addition, in the present invention, the action portion of the movable sinker is formed with a pole for pressing the knitted stitch loop,

The gap of the portion where the passive portion of the movable sinker and the end of the sinker jack engage is within the range of the state where the passive portion and the end are in contact with one side of the gap from the state of contact with the other side of the gap. It is formed to limit the position of the sinker pole to a side different from the position of the yarn feeder which supplies the knitting yarn to the hook based on the position where the hook of the knitting needle passes when the knitting needle advances and displaces into the knitting fabric knitting region. It features.

In the present invention, the passive portion of the movable sinker is provided with a protrusion protruding toward the end side of the sinker jack,

An end portion of the sinker jack has a recess wider than the width of the protrusion,

The coupling is formed by the concave portion and the protrusion.

Moreover, in this invention, the edge part of the said sinker jack is provided with the protrusion which protrudes to the passive part side of the said movable sinker,

The passive part of the movable sinker has a recess wider than the width of the protrusion,

The coupling is characterized in that the concave portion and the projection is made.

The objects, features and advantages of the present invention will become more apparent from the following detailed description and drawings.

1 is a side view showing the configuration of main parts of flat knitting machine 1 as an example of an embodiment of the present invention.

Fig. 2 is a side view of the needle bed gap 2 vicinity of the flat knitting machine of Fig. 1.

3 is a side view of the needle bed gap 2 vicinity of the flat knitting machine of FIG.

4 is a side view of the needle bed gap 2 vicinity of the flat knitting machine of FIG.

5 is a side view of the needle bed gap 2 vicinity of the flat knitting machine of FIG.

FIG. 6 is a side view of the vicinity of the needle bed gap 2 including the carriage 21 in the flat knitting machine of FIG.

FIG. 7 is a side view showing the overall configuration of the needle bed 3 in the flat knitting machine of FIG.

FIG. 8 is a plan view showing a schematic configuration of a cam mechanism mounted on the carriage 21 in the flat knitting machine of FIG.

FIG. 9 is an enlarged plan view of the vicinity of the needle bed gap 2 of FIG.

FIG. 10 is a side view showing the configuration of the needle bed 3 of FIG.

FIG. 11 is a side view of the base 4 and the needle plate 5 constituting the needle bed 3 of FIG.

12 is a side view showing the shapes of the movable sinker 8, the sinker jack 9, and the line spring 18 of FIG.

FIG. 13 is a side view showing a state in which the knitting needles 7, the spacers 13 and the yarn guides 14 of FIG. 1 are assembled.

14 is a side view showing the shape of the yarn guide 14 of FIG. FIG. 15 is a side view showing the shape of the spacer 13 of FIG. FIG. 16 is a side view showing the shape of the single needle 7 of FIG.

FIG. 17 is a side view showing a state in which knitted fabric 41 is knitted by feeding yarn 40 from yarn feeder 11 in needle bed gap 2 of FIG.

FIG. 18 is a side view showing a state in which knitting yarn 41 is knitted by supplying knitting yarn 40 from yarn feeder 11 in needle bed gap 2 of FIG.

Fig. 19 is a side view showing a partial configuration of another embodiment of an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 shows the configuration of main parts of flat knitting machine 1 as an example of the embodiment of the present invention. In the flat knitting machine 1, the front and rear needle beds face each other in the needle bed gap 2. In the figure, one needle bed 3 is shown, and the other needle bed is omitted. With respect to the needle bed gap 2, the needle bed 3 is inclined such that the needle bed gap side is higher and lower as it moves away from the needle bed gap. That is, the front and rear needle beds are arranged in an inverted V shape with the needle bed gap as the center. However, for convenience of explanation, one needle bed 3 is shown in a horizontal attitude. The configuration of one needle bed 3 is basically the same as that of the other needle bed.

A plurality of needle plates 5 are provided in the direction toward the needle bed gap 2, respectively, on the base 4 disposed to face the needle bed gap 2 as the knitted fabric knitting area. The needle plate 5 is formed so that the thickness of the plate becomes thin at the end portion on the needle bed gap 2 side. A needle groove 6 is formed between the needle plates 5, the width of which extends on the needle bed gap 2 side. The needle needle 7 is accommodated in each needle groove 6. The movable sinker 8 is accommodated in the edge part which the width | variety of the needle groove 6 expands, respectively. In this way, the needle bed 3 is formed. In the flat knitting machine 1, the needle bed 3 is selectively retracted with respect to the needle bed gap 2 while reciprocating the carriage along the needle bed gap 2, ie perpendicular to the drawing, on the needle bed 3, and the knitted fabric is interacted with the movable sinker 8. To organize. Note that the carriage is not shown in the drawings, and the cam needle 9 for operating the needle needle 7 and the cam mechanism 10 for sinker operation for operating the movable sinker 8 are shown.

In the needle bed gap 2, a knitting loop can be supplied from the yarn feeder 11 to the knitting needle 7 to form a stitch loop. The knitting needle 7 is arranged in parallel with the movable sinker 8 in the width direction in each needle groove 6. The knitting needle 7 is a compound needle capable of advancing and displacing the needle bed gap 2 independently of the needle body 7a and the slider 7b. The needle plate 5 is provided with the recessed part 5a which pivotally supports the movable sinker 8 rotatably at the edge part of the needle bed gap 2 side. The movable sinker 8 includes a pivot support 8a pivotally supported by the recess 5a, a passive part 8b driven by a forward and backward displacement with respect to the needle bed gap 2, and a forward and backward displacement with respect to the passive part 8b with the pivot support 8a as the point. An acting portion 8c, which is converted into rotational displacement and acts as a sinker with respect to the needle bed gap 2, is provided.

In each needle groove 6, a sinker jack 12 capable of linearly advancing displacement with respect to the needle bed gap 2 is stored. The sinker jack 12 engages with the passive portion 8b of the movable sinker 8 at the end 12a. Moreover, the sinker jack 12 is provided with the butt 12c which protrudes in the direction away from the base of a needle bed in the base 12b side extended in the direction which falls away from the needle bed gap 2 with respect to the edge part 12a. The sinker jack 12 also has a groove portion 12d extending in the advancing and displacing direction between the end portion 12a and the base 12b.

In each needle groove 6, a spacer 13 is arranged in a direction away from the base 4 of the needle bed 3 with respect to the knitting needle 7. The spacer 13 restricts the knitting needles 7 from falling from the base 4 at the bottom, and prevents the sinker jack 12 from shifting in the width direction of the needle groove 6 at the side. The yarn guide 14 includes a base 14a and a knitting press portion 14b. The base 14a is inserted into the groove formed in the side of the spacer 13 so as to extend in the advancing direction so as to slide in the advancing direction. The knitting pressing portion 14b is formed on the needle bed gap 2 side with respect to the base 14a, and can advance to the needle bed gap 2 to press the knitting yarn.

The bands 15 are fixed to each other by penetrating the spacer 13 and the needle plate 5 in each needle groove 6 in a direction along the needle bed gap, that is, in a direction perpendicular to the drawing. The band 15 is also inserted into the groove portion 12d of the sinker jack 12 and also functions as a through member for restricting the sliding of the sinker jack 12 so as not to fall off from the needle groove 6.

The sinker actuating cam mechanism 10 provided on the carriage acts to retract the sinker jack 12 from the needle bed gap 2 so that the acting portion 8c of the movable sinker 8 evacuates from the needle bed gap 2 by acting on the butt 12c of the sinker jack 12. And optionally, a drive mechanism. The drive mechanism will be described later. The sinker jack 12 driven to be retracted by the drive mechanism is engaged in the retracted position by the coupling mechanism 16. In the coupling mechanism 16, the sinker jack 12 is engaged with the wire 17, which is a member penetrating the needle plate 5 in the direction along the needle bed gap 2. In order to join the sinker jack 12, since the wire 17 penetrating through the needle plate 5 is used, it is possible to miniaturize the coupling mechanism 16. To engage the sinker jack 12 with respect to the wire 17, the sinker jack 12 has an extension 12e extending in the direction away from the needle bed gap 2 in the middle portion. The protrusion 12f is formed at the tip of the extension 12e. As described later, the projection 12f can be joined by the wire 17. The same wire 19 is also used for fixing the needle plate 5 and the base 4. In addition, the stopper which the tip end of the acting part 8c of the movable sinker 8 is in contact with the position of the needle bed gap 2 on the lower surface of the base 4, and restricts the rotational displacement of the movable sinker 8 by pressurization by the sun spring 18. 20 is installed.

The movable sinker 8 is a rotational displacement having the pivot support 8a pivoted by the recess 5a of the needle plate 5, and the butt 12c of the sinker jack 12 is driven in the advance displacement direction by the cam mechanism 10 for sinker operation of the carriage. Can be done remotely. By this remote drive, the movable sinker 8 can be operated between the state which advanced into the needle bed gap as shown by the solid line and the state which retracted from the needle bed gap 2 as shown by the two-dot chain line. Even if the passive portion 8b, which receives the driving force for operating the movable sinker 8 from the end 12a of the sinker jack 12, is close to the pivot support portion 8a in the vicinity of the needle bed gap 2, the forward and backward displacement of the sinker jack 12 may be converted into rotational displacement. . Therefore, there is no need to install a mechanism for directly pressurizing the manual portion 8b on the carriage side, so that the carriage is not covered near the needle bed gap 2 of the needle bed 3, thereby miniaturization, thereby securing a large space in the needle bed 3 close to the needle bed gap 2 can do.

Since the coupling mechanism 16 engages the sinker jack 12 driven to be retracted by the drive mechanism in the retracted position, the sinker jack 12 is supported in the retracted position after the carriage passes, so that the acting portion 8c of the movable sinker 8 is the needle bed gap 2. The retreat state can be maintained. If the needle bed gap 2 facing the front and rear needle beds is a knitted fabric knitting area, when the various knitting fabrics are knitted by the racking operation, the actuating portion 8c of the movable sinker 8 is evacuated from the needle bed gap 2 to scratch the knitted fabric. You can alleviate concerns.

The movable sinker 8 is pressed by the sun spring 18 so that the acting portion 8c enters the needle bed gap 2. Coupling of the passive portion 8b of the movable sinker 8 and the end 12a of the sinker jack 12 has a gap such that the passive portion 8b and the end 12a come in contact with one side by pressurization by the line spring 18, and the other side has a gap. By forming such a gap, when the resistance from the knitting applied by the acting portion 8c of the movable sinker 8 becomes larger than the pressing force (elastic force) by the sun spring 18, the movable sinker 8 causes the acting portion 8c to retreat from the needle bed gap 2. There is room for rotational displacement, and the tension generated in the knitting yarn can be relaxed so as not to be too large.

Since the needle needle 7 uses a compound needle consisting of a needle body 7a and a slider 7b, the stroke of the forward and backward displacement necessary for knitting the knitted fabric can be made smaller than that of the latch needle, and the needle mechanism cam mechanism for mounting on the carriage 9 Can be miniaturized. Since each needle groove 6 is provided with a movable sinker 8 and a yarn guide 14, the knitting of the knitted fabric by the compound needle can be ensured.

Fig. 2 shows a state in which the sinker jack 12 is most retracted from the needle bed gap 2 side to engage the projection 12f with the wire 17 in the coupling mechanism 16. Figs. The extension part 12e in which the protrusion 12f is formed in a tip part functions as a cantilever with respect to the base 12b, and can elastically deform when the wire 17 exceeds the protrusion 12f. As long as the force causing this elastic deformation does not work from the outside, the coupling mechanism 16 can continue the stationary state of the movable sinker 8. Here, the center line of the needle bed gap 2 is represented by 2a.

3 and 4 show a state in which the movable sinker 8 is in the retracted position and the advanced position, respectively. Fig. 5 shows a state in which the movable sinker 8 is retracted by a gap formed at the end portion 12a of the sinker jack 12 by the resistance from the knitting yarn when the movable sinker 8 is in the advanced position. This retraction displacement is also possible in the retraction position as shown in FIG. The movable sinker 8 can be moved between the retracted position in FIG. 3 and the advanced position in FIG. 4 in accordance with the knitting operation of the knitting needle 7 to reliably pressurize the knitted fabric. At that time, if a resistance greater than the pressing force (elastic force) of the wire spring 18 is received from the knitting yarn, it can retreat and relax the tension of the knitting yarn. It can be seen from FIGS. 3 and 4 that the band 15 is engaged with the groove 12d of the sinker jack 12 and functions as a guide member for limiting the sliding displacement so that the sinker jack 12 does not come out of the needle plate 5. As shown in Figs. 4 and 5, it can be seen that the end portion of the groove portion 12d is in contact with the side end of the band 15 in the advancement position so that the band 15 also functions as a stopper.

Fig. 6 shows a partial configuration of the carriage 21 on which the single needle actuating cam mechanism 9 and the sinker acting cam mechanism 10 are mounted. The carriage 21 is also provided with a solenoid 22 as a drive source for the drive mechanism described later. Since the band 15 restricts the sliding displacement in the middle portion rather than the upper portion of the sinker jack 12, the gap between the sinker actuating cam mechanism 10 and the end portion 12a of the sinker jack 12 in the stop position is narrowed to eliminate unnecessary space therebetween. Miniaturization can be achieved.

FIG. 7 shows the overall structure of the mechanism and the needle bed 3 mounted on the carriage 21 of FIG. The carriage 21 of Fig. 6 is also provided with a needle needle mechanism 23 for selecting the knitting needle 7 to be used for knitting in accordance with the knitting data of the knitting fabric. Since the selection of the knitting needle 7 by the needle needle mechanism 23 and the knitting operation of the knitting needle 7 by the cam mechanism 9 for knitting needle operation are the same as those already known, the description thereof is omitted.

8 shows a schematic configuration of a cam mechanism mounted on the carriage 21. The cam mechanism 9 for single needle operation acts on the butt 7c of the single needle 7. It is assumed that the carriage 21 moves in the direction from the right side to the left side of the drawing. The steeping position 30 is a position where the butt 7c is caught by the stitch cam 32 past the bridge cam 31 by the cam needle 9 for single needle operation. The sinker cam 33 of the sinker actuating cam mechanism 10 acts on the butt 12c of the sinker jack 12. The sinker cam 33 includes a moving cam 34 and a pair of rotating cams 35 and 36. The moving cam 34 is pushed by the butt 12c to the steeping position 30 side. The rotary cams 35 and 36 are interlocked so that the front side of the carriage 21 in the running direction operates and the rear side becomes inoperative. The stop cam 37 can retract the butt 12c of the sinker jack 12 to the stop position in the state indicated by the solid line by the drive by the solenoid 22. When the stop cam 37 is in the state indicated by the dashed-dotted line, it does not act on the butt 12c, and the butt 12c is set to the advance position by the fixing portion of the sinker cam 33.

The stop cam 37 is provided on only one side of the carriage 21, but can be provided on both sides. Of course, it is good to set the dummy course as needed so that the stop cam 37 can be operated before the racking operation by only one side. The carriage 21 is also provided with a slider cam 38 acting on the butt 7bc of the slider 7b. Moreover, although the cam acting on the butt 14c for the yarn guide 14 is shown, it abbreviate | omits what is shown in drawing.

As described above, the stop cam 37 functions as a drive mechanism capable of switching between actuation and non-operation depending on the presence or absence of excitation of the solenoid 22 using the solenoid 22 shown in FIG. When the stop cam 37 is operated by electrically energizing the solenoid 22 mounted on the carriage 21, the butt jack 12c of the sinker jack 12 is driven to retreat to the position where the sinker jack 12 is coupled to the coupling mechanism 16, and the motor stops even after the carriage 21 passes. Can continue.

Fig. 9 is an enlarged view showing the vicinity of the needle bed gap 2; The needle groove 6 is formed between the needle plates 5. The needle body 7a and the slider 7b of the knitting needle 7 are limited so as not to float from the base 4 at the bottom of the spacer 13. A movable sinker 8, a sinker jack 12, and the like are accommodated between the side of the spacer 13 and the needle plate 5.

FIG. 10 is a view showing the configuration of the needle bed 3, and FIG. 11 is a view showing the shapes of the base 4 and the needle plate 5 constituting the needle bed 3. FIG. Fig. 12 shows the shapes of the movable sinker 8, the sinker jack 9, and the line spring 18. Figs.

Fig. 13 shows a state in which the knitting needle 7, the spacer 13 and the yarn guide 14 are assembled. 14 shows the shape of the yarn guide 14. 15 shows the shape of the spacer 13. Fig. 16 shows the shape of knitting needle 7. The spacer 13 is fixed to the needle plate 5 by the band 15 and the wire 17. The long hole 13a through which the band 15 penetrates is formed in the spacer 13. The spacer 13 is also provided with an inclined groove 13b that opens to the surface side of the needle bed 3 and passes through the tip of the knitting needle 7. When the inclined groove 13b is a ventilation path, air is blown from the surface side of the needle bed 3, and the needle bed gap 2 can be cleaned by blowing seams or the like near the tip of the knitting needle 7.

The spacer 13 is also provided with a groove 13c extending in the advancing direction on a surface opposite to the surface on which the inclined groove 13b is formed. The groove 13c has a shape that matches the base 14a of the yarn guide 14. The base 14a of the yarn guide 14 is disposed in the direction away from the base of the needle bed with respect to the knitting needle 7 in the state of being inserted into the groove 13c of the spacer 13, so that the knitting needle 7 in the bottom slides in the advancing direction so that the yarn within each needle groove 6 Guide 14 can be easily accommodated.

A projection 14d is formed on the base 14a of the yarn guide 14 inserted into the groove 13c of the spacer 13 and slidingly displaced. In the groove 13c of the spacer 13, a window 13d serving as a recess for limiting the displacement range of the projection 14d of the yarn guide 14 is formed. The window 13d formed in the groove 13c of the spacer 13 into which the base 14a of the yarn guide 14 is inserted and slidingly displaced restricts the range in which the protrusion 14d formed in the base 14a of the yarn guide 14 is displaced, thereby limiting the operating range of the yarn guide 14. You can limit it.

17 and 18 show a state in which the knitted fabric 41 is knitted by supplying the knitting yarn 40 from the yarn feeder 11 in the needle bed gap 2. Fig. 17 shows a state in which the pressing force (elastic force) of the line spring 18 is greater than the resistance of the knitting yarn 40, and the stitch loop 41 is pressed against the acting portion 8c of the movable sinker 8. Fig. 18 shows a state in which the needle main body 7a or the slider 7b advances to the needle bed gap 2 side, the tension of the knitting yarn 40 increases, and the acting portion 8c of the movable sinker 18 retreats. The passive part 8b of the movable sinker 8 is provided with the protrusion which protrudes toward the edge part 12a side of the sinker jack 12. As shown in FIG. The end portion 12a of the sinker jack 12 has a recess wider than the width of the projection. The recesses and the projections make the coupling between the passive portion 8b of the movable sinker 8 and the end portion 12a of the sinker jack 12. The projection projecting from the passive portion 8b of the movable sinker 8 to the end 12a side of the sinker jack 12 is provided with an end portion 12a side of the sinker jack 12 and engaged with a recess wider than the width of the projection to be spring-pressed by a line spring 18 to form the projection and the recess. One side of a part can contact and press a knitted fabric. When the resistance from the knitted fabric becomes larger than the pressing force (elastic force) by the line spring 18, the movable sinker 8 can rotate until the projection comes into contact with the other side of the recess, thereby reducing the tension generated in the knitting yarn 40. It is possible to prevent excessive tension from working.

The state as shown in Fig. 18 is implemented when determining the so-called stitch size. In the state of determining the stitch size, when the stitch loop 41 knocks over the hook of the needle body 7a, which is closed by the slider 7b of the knitting needle 7, the acting portion 8c of the movable sinker 8 resists from the old loop. Retreats. Even in this case, the maximum retracted position of the movable sinker 8 is limited by contact between the gap of the end portion 12a of the sinker jack 12 and the passive portion 8b of the movable sinker 8 so that the pole 8d of the acting portion 8c of the movable sinker 8 does not rise above the lower surface of the needle. You can limit it. Thereby, the knitting yarn supplied from the yarn feeder 11 to the hook of the needle body 7a can be made to contact at the position above the pole 8d of the movable sinker 8. The loop size of the stitch formed at this time is determined by the retraction amount of the knitting needle 7 on the basis of the contact position of the movable sinker 8.

Fig. 19 shows a configuration of a coupling portion of the movable sinker 50 and the sinker jack 51, which is another embodiment of the present invention. Other parts are the same as those in the embodiment described with reference to Figs. In the present embodiment, the end portion 51a of the sinker jack 51 is provided with a protrusion protruding toward the passive portion 50b side of the movable sinker 50. The passive portion 50b of the movable sinker 50 has a recess wider than the width of the protrusion. The recessed portion and the projection are engaged with the passive portion 50b of the movable sinker 50 and the end portion 51a of the sinker jack 51. The protrusions projecting from the end portion 51a of the sinker jack 51 toward the passive portion 50b side of the movable sinker 50 are engaged with the recesses formed on the passive portion 50b side of the movable sinker 50 and wider than the width of the protrusion. Since such a gap exists, it is spring-pressed by the line spring 18 similarly to the embodiment of FIGS. 1-18, and one side of a projection and a recessed part can contact and press a knitted fabric. When the resistance from the knitted fabric becomes larger than the pressing force (elastic force) by the sun spring 18, the movable sinker 50 can rotate until the protrusion comes into contact with the other side of the concave portion, thereby relieving the tension generated in the knitting yarn. Excessive tension can be prevented from working.

This invention can be implemented in other various forms, without deviating from the mind or main characteristic. Therefore, the above embodiments are merely examples in all respects, and the scope of the present invention is shown in the claims, and is not limited in any way by the specification text.

In addition, all the modifications and changes which belong to the equal range of a claim are within the scope of this invention.

According to the present invention, when the butt of the sinker jack is driven in the direction of the advance displacement by the cam mechanism of the carriage, the movable sinker can be rotated and displaced so that the movable sinker can be moved forward and backward with respect to the knitted fabric knitting area. Even if the passive portion of the movable sinker is close to the pivot support portion near the knitted fabric knitting region, a mechanism for directly pressing the passive portion does not need to be provided on the carriage side, so that the carriage does not cover the vicinity of the knitted fabric knitting region of the needle bed. By planning, a wide space can be ensured in the needle bed close to the knitted fabric knitting area.

Since the coupling mechanism engages the sinker jack driven to be retracted by the drive mechanism in the retracted position, the sinker jack is supported in the retracted position even after the carriage passes, so that the action portion of the movable sinker can be retracted from the knitted fabric knitting region. have. If the needle bed gap facing the front and rear needle beds is the knitted fabric knitting area, when the various knitting fabrics are knitted by the racking operation, the action portion of the movable sinker can be evacuated from the needle bed gap to eliminate the possibility of scratching the knitted fabric and damaging it. Can be.

Further, according to the present invention, since the member penetrating the needle plate is used to engage the sinker jack, the coupling mechanism can be miniaturized.

In addition, according to the present invention, when the solenoid mounted on the carriage is electrically excited to operate the cam, the butt of the sinker jack is driven to retreat to the position where the sinker jack is engaged by the coupling mechanism, and the stationary state is maintained even after the carriage passes. I can continue.

According to the present invention, since the knitting needle uses a compound needle, it is possible to reduce the size of the knitting cam to be installed in the carriage, and to ensure the knitting of the knitted fabric by the movable sinker and the yarn guide needle. Needle grooves are provided on the needle grooves so that the needles do not fall off from the base, and the sinker jacks are prevented from shifting in the width direction of the needle grooves on the side, and the side portions are provided with spacers having grooves extending in the advancing direction, and the base of the yarn guide is provided. Is inserted into the groove of the spacer and is slidably displaced so that the yarn guide can be simply received in each needle groove.

In addition, according to the present invention, it is possible to limit the operating range of the yarn guide by limiting the range in which the protrusion formed on the base of the yarn guide is displaced by a recess formed in the groove of the spacer into which the base of the yarn guide is inserted and slidingly displaced. have.

Moreover, according to this invention, when air is blown in from the surface side of a needle bed through the ventilation path formed in a spacer, the vicinity of the tip of a knitting needle can be cleaned.

According to the present invention, the coupling between the passive part of the movable sinker and the end of the sinker jack is provided with a gap such that the passive part and the end are in contact with one side by pressurization by a spring, and the other side has a gap. Therefore, when the resistance from the knitting yarn received by the acting portion of the movable sinker becomes greater than the pressing force (elastic force) by the spring, the movable sinker may rotate rotationally so that the acting portion retreats from the knitted fabric knitting region, so that the tension applied to the knitting yarn is not excessive. I can alleviate it.

Moreover, according to this invention, the gap of the part which the passive part of a movable sinker and the end part of a sinker jack couple | bonds is the position of the pole which presses the stitch loop knitted by the action part of a movable sinker, and a knitting needle is a knitting fabric knitting area. On the basis of the position at which the hook of the knitting needle passes when shifting back and forth in the For example, when the knitting needle is supplied from the upper side of the needle bed gap with respect to the knitting needle, the pawl of the movable sinker is restricted to be lower than the bottom of the needle, so that even when the maximum sinking position of the movable sinker is pressed, the polo knitted fabric of the acting portion of the movable sinker is pressed to normal stitching. It can form a loop.

Moreover, according to this invention, the protrusion which protrudes from the passive part of a movable sinker to the end side of a sinker jack is provided with the end side of a sinker jack, engages in the recessed part wider than the width | variety of a protrusion, and is spring-pressed, and one side of a protrusion and a recessed part The knitted fabric can be pressed in contact. When the resistance from the knitted fabric becomes greater than the pressing force (elastic force) caused by the spring, the movable sinker can rotate until the protrusion comes into contact with the other side of the recess, so that the tension generated in the knitting yarn is relieved and excessive tension is applied. You can prevent this from working.

Moreover, according to this invention, the protrusion which protrudes from the end part of a sinker jack to the passive part side of a movable sinker is formed in the passive part side of a movable sinker, engages in the recessed part wider than the width | variety of a protrusion, is spring-pressed, and the one side of a protrusion and a recessed part. This contact can pressurize a knitted fabric. When the resistance from the knitted fabric becomes larger than the pressing force (elastic force) caused by the spring, the movable sinker can rotate until the protrusion comes into contact with the other side of the recess, so that the tension generated in the knitting yarn is alleviated and excessive Tension can be prevented from working.

Claims (10)

A plurality of needle plates are respectively provided in the direction toward the knitted fabric knitting region on a base disposed to face the knitted fabric knitting region, and the needle plate is the thickness of the plate at the end of the knitted fabric knitting region side. Is formed so as to be thin, forming a needle groove (needle groove) is widened between the needle plate knitting region side between the needle plate, the end of the width of the needle groove is expanded by receiving a needle needle in each needle groove Each of the movable sinkers accommodates a needle bed to form a needle bed, and the needle needle is selectively retracted with respect to the knitted fabric knitting area while reciprocating the carriage along the knitting fabric knitting area to interact with the movable sinker. In the flat knitting machine provided with the movable sinker which knits a knitted fabric, The needle plate has a concave portion that pivotally supports the movable sinker at an end portion on the knitted fabric knitting region side, The movable sinker includes a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part. It is provided with a working part which converts into a rotational displacement which makes a pivot support part a point, and acts as a sinker with respect to the said knitted fabric knitting area, A needle bed, which is accommodated in each needle groove, is capable of moving forward and backward with respect to the knitted fabric knitting region, engages with the passive portion of the movable sinker at the end, and extends in a direction away from the knitted fabric knitting region with respect to the end. A sinker jack having a butt projecting in a direction falling from the base of the base and having a groove extending in the advancing and displacing direction in the middle of the end and the base; A penetrating member which penetrates each needle plate in the direction along the knitted fabric knitting region and is inserted into the groove portion of the sinker jack so as to restrict the sinker jack from sliding away from the needle groove; A drive mechanism provided in the carriage, the drive mechanism being selectively operable to retract the sinker jack from the knitted fabric knitting region so as to act on the butt of the sinker jack to evacuate the actuating sinker from the knitted fabric knitting region; In each needle groove, a coupling mechanism for coupling the sinker jack, which is installed at a position away from the knitted fabric knitting area within the displacement displacement range of the sinker jack, and driven to be retracted by the drive mechanism, in the retracted position. The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method of claim 1, The coupling mechanism engages the projection formed on the base side of the sinker jack with respect to the member penetrating the needle plate in the direction along the knitted fabric knitting region. The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method according to claim 1 or 2, The drive mechanism includes a cam capable of switching the solenoid as a driving source and switching the operation or non-operation according to the presence or absence of the excitation of the solenoid. To retreat up to the position to join by The flat knitting machine provided with the movable sinker characterized by the above-mentioned. A plurality of needle plates are respectively provided in a direction toward the knitted fabric knitting region on a base disposed to face the knitted fabric knitting region, and the needle plate is formed so that the thickness of the plate becomes thin at the end portion of the knitted fabric knitting region side. A needle groove is formed between the plates to widen the needle groove on the knitted fabric knitting region side to accommodate the needle needle in each of the needle grooves, and a movable sinker is formed at each end of the needle groove to extend the width of the needle groove to form a needle bed. In a flat knitting machine having a movable sinker for knitting a knitted fabric by interacting with a movable sinker by selectively retreating the knitting needle with respect to the knitted fabric knitting area while reciprocating the carriage along the upper knitted fabric knitting area, The needle plate has a concave portion at an end portion on the knitted fabric knitting region side for pivotally supporting the movable sinker in rotational displacement, The movable sinker is a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part as a pivotal displacement point as the pivot support part. A working part which is converted to act as a sinker on the knitted fabric knitting region, The knitting needle is a compound needle which is arranged in parallel with the movable sinker in the width direction in each needle groove, and the needle body and the slider are each independently capable of advancing and displacing the knitting fabric knitting region, In each needle groove, Protrudes and displaces with respect to the knitted fabric knitting region and engages with the passive portion of the movable sinker at the end and protrudes in a direction away from the base of the needle bed on the base side extending in a direction away from the knitted fabric knitting region with respect to the end. A sinker jack provided with a butt and having a groove portion extending in the advancing and displacing direction between the end portion and the base portion; It is arranged in a direction away from the base of the needle bed with respect to the knitting needle to limit the knitting needle from the base at the bottom, and to limit the sinker jack from shifting in the width direction of the needle groove at the side, and to the side of the groove extending in the advance direction A spacer to be provided, A yarn guide inserted into a groove of the spacer and formed on the side of the knitted fabric knitting region with respect to the base and the base sliding in the advancing direction, and having a knitting pressing portion capable of advancing into the knitted fabric knitting region to press the knitting yarn; , A through member which penetrates the spacer and the needle plate in each needle groove in a direction along the knitted fabric knitting region and is fixed to each other and is inserted into the groove portion of the sinker jack to restrict the sinker jack from sliding away from the needle groove. The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method of claim 4, wherein A protrusion is formed at the base of the yarn guide inserted into the groove of the spacer and slidingly displaced. The groove of the spacer is formed with a recess for limiting the displacement range of the projection of the yarn guide The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method according to claim 4 or 5, The spacer is formed with the knitting needle ventilation passage opening toward the surface side of the needle bed and leading to the knitting fabric knitting region side. The flat knitting machine provided with the movable sinker characterized by the above-mentioned. A plurality of needle plates are respectively provided in a direction toward the knitted fabric knitting region on a base disposed to face the knitted fabric knitting region, and the needle plate is formed so that the thickness of the plate becomes thin at the end portion of the knitted fabric knitting region side. A needle groove is formed between the plates to expand the width of the knitted fabric knitting region to accommodate the needle needle in each needle groove, and a movable sinker is formed at each end of the needle groove to extend the width of the needle groove to form a needle bed. In a flat knitting machine having a movable sinker for knitting a knitted fabric by interacting with a movable sinker by selectively retreating the knitting needle with respect to the knitted fabric knitting area while reciprocating the carriage along the upper knitted fabric knitting area, The needle plate has a concave portion at an end portion on the knitted fabric knitting region side for pivotally supporting the movable sinker in rotational displacement, The movable sinker is a pivot support part pivotally supported by the recess, a passive part driven by a forward and backward displacement with respect to the knitted fabric knitting region, and a forward and backward displacement with respect to the passive part as a pivotal displacement point as the pivot support part. An acting portion which is converted to act as a sinker on the knitted fabric knitting region, The base of the needle bed, which is accommodated in each needle groove, is capable of advancing displacement with respect to the knitted fabric knitting region, engages with the passive portion of the movable sinker at the end, and extends in a direction away from the knitted fabric knitting region with respect to the end. A sinker jack having a butt projecting in a direction falling from the center and having a groove portion extending in the advancing and displacing direction in the middle of the end portion and the base; A through member penetrating each needle plate in a direction along the knitted fabric knitting region and inserted into the groove portion of the sinker jack to restrict the sinker jack from sliding away from the needle groove; A spring for urging the movable sinker to move its working portion into the knitted fabric knitting region, The coupling between the passive part of the movable sinker and the end of the sinker jack is made with a gap such that the passive part and the end are in contact with one side and the other side has a gap by pressurization by the spring. Flat knitting machine having a movable sinker The method of claim 7, wherein The action portion of the movable sinker is formed with a pole for pressing the knitted stitch loop, The gap of the portion where the passive portion of the movable sinker and the end of the sinker jack engage is within the range of the state where the passive portion and the end are in contact with one side of the gap from the state of contact with the other side of the gap. It is formed to limit the position of the sinker pole to a side different from the position of the yarn feeder which supplies the knitting yarn to the hook based on the position where the hook of the knitting needle passes when the knitting needle advances and displaces into the knitting fabric knitting region. The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method of claim 7 further comprising The passive part of the movable sinker has a protrusion projecting toward the end side of the sinker jack, An end portion of the sinker jack has a recess wider than the width of the protrusion, The coupling is made by the recess and the projection The flat knitting machine provided with the movable sinker characterized by the above-mentioned. The method according to claim 7 or 8, An end portion of the sinker jack is provided with a protrusion that projects toward the passive portion side of the movable sinker, The passive part of the movable sinker has a recess wider than the width of the protrusion, The coupling is made by the recess and the projection The flat knitting machine provided with the movable sinker characterized by the above-mentioned.

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